Hoisting mechanism



Feb. 10, 1931' c. F. 056000 KOISTING MECHANISM Filed Dec. 51, 1925 AWNPatented Feb. 10, 1931 UNITED STATES PATENT OFFICE CHARLES F. OSGOOD, FCLAREMONT; NEW HAMPSHIRE, ASSIGNOR T0 SULLIVAN MACHINERY COMPANY, ACORPORATION OF MASSACHUSETTS HOISTIN G MECHANISM Application filedDecember 31, 1923. Serial No. 683,614.

This invention relates to hoisting mechanisms.

' It has for its object to provide an improved type of hoistingmechanism. Another object object is to provide an improved hoistingmechanism of the double drum type. A further object is to provideimproved hoisting mechanism of the double drum type which uses areversible motor. A still further ob- 1 ject of my invention is toprovide an improved double drum hoisting mechanism having a reversibletype of motor and having means whereby only one drum at a time will beautomatically and positively 1: driven, depending upon the direction ofrotation of the motor. 'Another object is to have the drums disposed oneach end of the reversible motor. It is also an object of the.

invention to provide an improved double 2o drum hoist having areversible motor disposed between the ends of said drums and supportedindependently thereof. It is also an object to providea-double drumhoist with the motor disposed between the drums and 2 to provideimproved gear reduction means between said motor and drums.

In the accompanying drawings I have shown for purposes of illustrationone form which my invention may assume in practice.

In these drawings,

Fig. l is a side elevation, partly broken away, to show details ofconstruction.

Fig. 2 is an enlarged transverse sectional view on line 2-2 of Fig. 1.

Fig. 3 is an enlarged sectional View of a fluid controlled valv Fig. 4is a fragmentary sectional view showing the intermeshing motor rotors.

In my improved hoisting mechanism I propose to use a base 1 having acylindrical clamping member 2 disposed centrally of said base andprojecting outwardly therefrom, this clamping member being adapted toreceive a hollow cylindrical motor casing 3; This casing is positionedcentrally with respect to the clamping member 2, and has an inwardlyprojecting portion 4 forming chambers within which a pair of reverselyrotatable rotors 5 are dis osed. These ro- 5 tors are herein shown aslieing of the spur end chamber 13. A plate 14 gear type, although anyother suitable type of reversible motor may be used, and are rotatablymounted within side plates 6.

These plates abut against the shoulders formed by the inwardlyprojecting portion shaft is a pinion 7 meshing with a gear 8 fixed toone end of'a shaft 9. This shaft is rotatably supported at its inner endby the cas ing 6 and at its outer end by hearing 11. A standard orcasing 10 which projects upward ly from the end of the frame 1, issecured thereto by bolts 12, this standard having an which is mounted onthe standard 10 to cover the chamber 13 supports the bearing 11. Alsocarried by the standard is a bearing supporting portion 15 adapted tosupport rotatably one end of a sleeve 16 as by bearings 17 while thesleeve is supported at its opposite end upon the shaft 9 as by a bearing18. Rotatably mounted upon the sleeve 16 is a drum 19 having usualradial flanges 20, the inner one of whichhas an annular portion 21, apart of which projects over the end of the motor casing upon which it isrotatably supported as by a roller hear ing 22. Disposed upon theperiphery of the portion 21 is a usual braking surface 23 with which ausual manually operated brake band 24 cooperates.

The reduction gearing between the shaft 9 and the drum comprises apinion27 mounted on the outer end of the shaft 9. This pinion meshes with agear 28 carried upon a shaft rotatably mounted within the standard 10about a relatively stationary axis and this shaft also carries pinion 29meshing with a gear 30 secured to the sleeve 16 as by a key 31. Fixed tothe inner end of the sleeve 16 and between the inner flange 20 and theouter end of the casing 3 is a radial arm or drum driver 33 carrying onits outer end a spring pressed pawl 34, herein shown as having acylindrical recess 35 which is adapted to engage a cylindrical lug onthe end of said arm. Cooperating with the pawl 34 is a ratchet 36 formedon the inner side of the flange 21- substantially in the same plane asthe braln'ng surface 23. The motor casing 3 and the drum flange 20cooperate to form a gear casing holding a supply of lubricating oil 48.It will here be stated that the construction of the pawl and ratchetmechanism for driving the right hand drum is substantially the same asthe left end ratchet but instead is adapted for driving engagement onlyupon reverse rotation.

In order to control rotation of the motor any suitable fluid controlvalve mechanism may be employed. In a fluid motor which is reversible,it is customary to control both the supply of fluid and the exhaust by acommon valve. In such case, it is a simple matter to reverse the motorby reversing the connections. A typical valve mechanism is shown in Fig.3. In the position of the valve as shown in Fig. 3, fluid is beingadmitted through an inlet passage 40 and through a port 41 into apassage42 (see also Fig. 4) to cause rotation of the motor in onedirection. A second passage 43 has at the same time communication withan exhaust passage 44 as by a passage 45 passing around the wall of theinlet passage 40. When it is desired to reverse the operation of themotor, the valve will be rotated until the passages 41 and 43, and 42and 45 communicate with each other. Thus the actuating fluid will bepassed into the passage 43 to allow the motor to be reversely rotated.

In the operation of the device, assuming the motor to be running in adirection to drive the left hand drum, the pinion 7 will drive shaft 9through gear 8 which in turn will actuate the sleeve 16 as by pinion andgears 27, 28, and 29, 30, respectively. Power is then transmitted fromthe left hand end of the sleeve 16 to the arm 33 to cause the pawl 34 toengage the ratchet 36 and thereby positively drive the drum. During thisinterval the pawl for the right hand drum will be slip- -ping over itsratchet, thus permitting the right hand drum to be rotated freely inorder to unwind the cable therefrom.

It will thus be seen that I have provided an extremely simple andcompact means whereby when the motor is reversed the power will beautomatically transferred from one drum to the other. It will also benoted that my device is symmetrical, thus making a .well balanced hoist.I have also so enclosed all operating members that they may be easilyand permanently lubricated, thus avoiding any excess wear and I can alsoreadily remove the drums without in any way disturbing the motor. By theaid of covers 14 I can readily inspect the gear mechanism containedwithin the standard 13, such construction thereby avoiding any waste oftime on the part of the operator or repair man in getting at the seat oftrouble, if any should arise.

While I have in this application specifical-.

ly described one form which my invention may assume in practice, it willbe understood that this form of the same is shown for purposes ofillustration and that the invention may be modified and embodied inother forms without departing from its spirit or the scope of theappended claims.

What I claim as new and desire to secure by Letters Patent is:

1. In a hoisting mechanism, a reversible motor, a winding. drum disposedat each end thereof, and driving connections between said motor anddrums including a driver member for each drum, said driver members beingconnected in driving relation with said drums to alternatively drive thelatter automatically in accordance with the direction of motor rotation,and driving gearing between the opposite ends of said motor and each ofsaid driver members.

2. In a hoisting mechanism, a reversible motor, a winding drum disposedat each end thereof, and driving connections between said motor anddrums including a driver member for each drum disposed between theadjacent ends of said drum and motor, said driver members beingconnected in driving relation with said drums to alternativelydrive thelatter automatically in accordance with the direction of motor rotation,and driving gearing between the opposite ends of said motor and each ofsaid driver members.

3. In a hoisting mechanism, a reversible motor, a winding drum disposedat each end thereof and arranged coaxially therewith, and drivingconnections between said motor and drums including a driver member foreach drum, said driver members being connected in driving relation withsaid drums to alternatively, drive the latter automatically inaccordance with the direction of motor rotation, and driving gearingbetween the opposite ends of said motor and each of said driver members.

4. In a hoisting mechanism, a reversible motor, a winding drum disposedat each end thereof, and driving connections between said motor anddrums including a rotatable sleeve disposed at each end of said motorand on which the adjacent drum is journaled, a drum driver membercarried by each of said sleeves, said driver members being connected indriving relation with said drums to alternatively drive the latterautomatically in accordance with the direction of motor rotation, anddriving gearing between the opposite ends 0 said motor and each of saidsleeves. 5. In a hoisting mechanism',areversible motor, a winding drumdisposed at each end thereof, and driving connections between said Imotor and drums including a rotatable sleeve disposed at each end ofsaid motor and on which the adjacent drum is journaled, a drum drivermember carried by the inner end of each of said sleeves, said drivermembers being connected in driving relation with said drums toalternatively drive the latter automatically in accordance with thedirection of motor rotation, and driving gearing between the oppositeends of said motor and the remote end of each of said sleeves.

' 6. In a hoisting mechanism, a centrally located driving motor, a pairof winding drums disposed at opposite ends of said motor and alinedtherewith, said drums being rotatably supported at their adjacent endson said motor, and driving connections between said motor and drumsincluding a rotatable sleeve disposed within and extending througheachof said drums and on which said drums are journaled, drum drivermembers connected to the adjacent ends of said sleeves, said drum drivermembers being connected in driving relation with said drums toalternatively drive the latter automatically in accordance with thedirection of motor rotation,and driving gearing between the oppositeends of said motor and the remote ends of said sleeves.

7. In a hoisting mechanism, a centrally located motor, a winding drumdisposed at each end of said motor, and driving connections between saidmotor and drums including driving shafts projecting outwardly from theopposite ends of said motor, reduction gearing disposed at the outerends of said drums and connected to said shafts, teeth carried by theinner ends of said drums, and means driven by said gearing adapted toengage said teeth in driving relation.

8. In a hoisting mechanism, a reversible motor having at opposite endsmeans for driving gearing, a pair of winding drums one disposed at eachof said ends and alined with said motor, drum driver members disposedbetween the adjacent ends of said drums and motor, said drum drivermembers being operative to alternatively drive said drums automaticallyin accordance with the direction of motor rotation, and driving gearingbetween the opposite ends of said motor and said driver membersoperatively connected to said earing driving means.

9. n a hoisting mechanism, a reversible motor having a stationary casingpresenting cylindrical bearing surfaces at its opposite ends, a pair ofdrums one disposed at each of said ends and having its inner endjournaled on the respective bearing surface, each of said drums having awinding portion, and driving connections between the opposite ends ofsaid motor and each of said drums including automatic means for alternaively connecting one or the other of said drums in driving relation inaccordance with the direction of motor rotation. Y

10. In a hoisting mechanism, a motor, gear casings disposed at oppositeends of sa1d mo- 11'. In a hoisting mechanism, a base framehaving acentral standard, a motor carried by said standard, gear casings securedto the ends of said frame, a pair of coaxial winding drums disposed atopposite ends of said motor and supported at their remote ends on saidcasings and at their adjacent ends on said central standard, and drivingconnections between the ends of said motor and drums including sets ofreduction gears housed in and supported by said casings to revolve onstationary axes.

12. In a hoisting mechanism, a base frame having a central standard, amotor carried by said standard and having a casing presenting cylindicalbearing surfaces at its ends, gear casings secured to the ends of saidframe, a pair of coaxial winding drums disposed at opposite ends of saidmotor and supported at their adjacent ends on said bearing surfaces andat their remote ends on said gear casings, and driving connectionsbetween said motor and drums including sets of reduction gears housed inand supported by said casings to revolve on stationary axes.

13. In a hoisting mechanism, a reversible motor having a casingpresenting cylindrical bearing surfaces at its ends, a pair of coaxialwinding drums disposed at opposite ends of said motor and journaled attheir adjacent ends on said bearing surfaces, supports for disposed ateach end of said motor, means for supporting said drums on said motor,and driving connections between said drums and motor including arotatable sleeve disposed within each of said drums and rotatablerelative thereto, driving gearing between said motor and sleeves anddisposed at each end of each of said sleeves, and driving connectionsextending through said sleeves and connecting the gearing at the twoends thereof.

15. In a hoisting mechanism, a pair of relatively rotatable coaxial ropewinding drums, a reversible motor disposed between the adjacent ends ofsaid drums, a pair of rotatable sleeves projecting in oppositedirections from the sides of said motor and into said drums,

operative drivingconnections between said motor and each sleeveincluding reduction gearing and a shaft, the latter being disposedwithin the respective sleeve, and means carried by said sleeves forautomatically alternatively driving said drums in accordance with thedirection of motor rotation.

16. In ahoisting mechanism, a pair of relatively rotatable coaxialwinding drums, a reversible motor disposed between the adjacent ends ofsaid drums, a pair of shafts extending in opposite directions from'andsupported by the sides of said motor, said drums being positionedcoaxial with said shafts, a gear carried by each of said shafts adjacentsaid motor, a motor pinion meshing therewith, and means for driving saiddrums by said shafts, said latter means including means forautomatically alternatively driving said drums in accordance with thedirection of motor rotation.

17. A hoisting mechanism comprising a pair of relatively rotatablecoaxial winding drums, a reversible motor disposed between the adjacentends of said drums, a pair of shafts extending in opposite directionsfrom and supported by the sides of said motor, a gear carried by each ofsaid shafts adjacent said motor, a motor pinion meshing therewith, meansfor supporting a drum on each of said shafts coaxially therewith, andmeans for driving said drums by said shafts, said latter means includingmeans for automatically driving one drum at a time in accordance withthe direction of motor rotation.

18. In a hoisting mechanism, a motor having a casing, a winding drumjournaled at one end on the motor casing, and driving connectionsbetween said motor and drum including a shaft extending from themctorand driven thereby through gearing, asleeve surrounding said shaft, saiddrum and sleeve being provided with cooperating bearing surfaces,gearing connecting said shaft and sleeve, a gear casing for housing saidlast mentioned gearing and further providing a journal for said sleeve,and clutch connections between said sleeve and said drum.

19. In a hoisting mechanism, a motor, a pair of coaxial winding drumsdisposed one at each end of said motor and alined therewith, and drivingconnections between said motor and drums including shafts extending fromsaid motor at opposite ends thereof and driven thereby, a sleevesurrounding each of said shafts and journaled thereon, said drums beingjournaled on said sleeves, driving gears between said motor and shafts,driving gears between each of said shafts and the corresponding sleeve,said gears being disposed at each endof said sleeve, and clutch meansfor connecting said drums to said sleeves.

20. In a hoisting mechanism, a reversible motor, a pair of coaxialwinding drums disposed at opposite ends of said motor and alinedtherewith, and driving connections between said motor and drumsincluding shafts driving gears between said motor and shafts,-

driving gears between each shaft and its respective sleeve, said gearsbeing disposed at opposite ends of said sleeves, and means forconnecting said driims to said sleeves automatically in accordance withthe direction of motor rotation.

21. In a hoisting mechanism, a pair of relatively rotatable coaxialdrums having winding surfaces, a reversible motor disposed between theadjacent ends of said drums and having a casing presenting cylindricaldrum bearing surfaces at its ends, a pair of shafts extending inopposite directions from and supported by the ends of said motor, saiddrums being positioned coaxial with said shafts, a gear carried by eachof said shafts adjacent said motor, a motor'pinion meshing therewith,and means for driving said drums by said shafts, said latter meansincluding means for driving one drum at a time automatically inaccordance with the direction of motor rotation.

22. In a hoisting mechanism, a reversible motor having a casingpresenting cylindrical bearing surfaces at the ends thereof, a pair ofrelatively'rotatable drums journaled on said casing and having windingsurfaces, and operative driving connections between said motor and drumsincluding means to connect one or the other of said drums with saidmotor automatically in accordance with the direction of motor rotation.

23. In a hoisting mechanism, a reversible motor, a pair of winding drumsdis osed at opposite ends of said motor and in a inement therewith,and'driving connections between the opposite ends of said motor and saiddrums including an automatic clutch device for each driving connectionto automatically either drive or not drive the respective drum inaccordance with the direction of motor rotation.

24. In a hoisting mechanism, a reversible motor, a pair of winding drumsdisposed at opposite ends of said motor and in alinement therewith, anddriving connections between the opposite ends of said motor and saiddrums, each driving connection including an automatic clutch device toautomatically either drive or not drive the respective drum inaccordance with the direction of motor rotation and reduction gearingbetween the motor and automatic clutch device, the gearing beingdisposed at the outer end of the respective winding drum.

25. In a hoisting mechanism, a pair of relatively rotatable coaxialwinding drums, a

- reversible motor disposed between the remote between said motor andthe adjacent ends of said drums including an automatic clutch device foreach driving connection to automatically either drive or not drive therespective drum in accordance with the direction of motor rotation, saidclutch devices being of opposite characteristic whereby said drums areonly alternatively driven in accordance with the direction of motorrotation.

26. In a hoisting mechanism, a pair of relatively rotatable coaxialwinding drums, a re and projecting from both ends of said motor,

and a casing presenting cylindrical bearing surfaces at its ends,relatively rotatable drums each having a winding surface and onedisposed at each end of said motor and rotatably sup orted on itsadjacent bearingsurface, and riving-connections between said motoranddrums-including a pinion secured to each end of said rotor shaft, andgearing connecting said pinions and drums and including means wherebysaid drums are only alternatively driven automatically in accord-.

ance with the direction of motor rotation.

28. In a hoisting mechanism, a reversible motor, a pair of winding drumsadapted .to be driven thereby, a. pair of sleeves extending in oppositedirections from said motor on which said drums are rotatably supported,shafts driven by said motor extending through said sleeves,reductiongearing disposed at theends of said sleeves and connected tosaidshafts, and an automatic clutch for each of the driving connectiohsbetween the respective drums and the motor to automatically either driveor not drive the respective drums in accordance with the directions ofmotor rotation. v i

29 In a hoisting mechanism, a pair of winding drums, a reversibledriving motor disposed between said drums, and driving connectionsbetween. said motor and said drums including a pair of sleeves extending1n opposlte directions from said motor on which said drums arerotatably,supported,,a

, pair of drive shaftspdriven by said motor ex tending through saidsleeves, reduction gear mg for each drum disposed at the respectiveouter ends of said-drive shafts and connected or not drive therespective drums in accord, ance with the direction of motor rotation.

30. In a hoisting mechanism, a pair of winding drums having internalgear teeth'on each of the same whereby they are driven, a reversiblemotor disposed between said drums, and driving connections between theopposite ends of said motor and the gear teeth on said drums includingshafts driven by said motor extending in opposite directions therefromthrough said drums, reduction gearing disposed at the respective outerends of said shafts and connected thereto bypinions, said pinions beingcoaxial, and an automatic clutch for each of the driving connections toautomatically either drive or not drive the respective drum inaccordance with the direction of motor rotation.

31. In a hoisting mechanism, a reversible motor having a casing, a pairof winding drums, the inner ends of said drums being supported on saidcasing, and driving connections between the opposite ends of said motorand said drums including a pair of I drive shafts driven by said motorextending in opposite directions from said motor connections betweensaid motor and said drums including sleeves extending in oppositedirections from said motor on which each drum disposed at the respectiveouter ends of said. drive shafts and connected thereto, a casing foreach of said reduction gearings, each gear casing providing a sup- 1port for therespective reduction gearing and the outer ends of therespective drive shaft and sleeve. and an automatic clutch device foracifof the driving connections tofautomatically either drive or notdrive the respective drum in accordance with the direction of motorrotation i.

In testimonywhereo'f I afiix my signature. 7

, CHARLES F. OSGOOD.

thereto, a casing for each of said reduction gearings, said sleevesbeing carried between said gear casings'and said motor, and an automatlcclutch device foreach of said drivmg connections to automatically eitherdrive

